The key to doing this on a synth is the creation of phase-locked sawtooth and triangle LFO waves, with the phases of the various waves spread evenly across 360 degrees. I used LFO C to generate the phase-locked sawtooths, and then used rectifers and level convertors to convert these to triangle waves. Static shapers are used to round the triangle slightly, so that partials enter the mix smoothly.

I actually remember reading something once about a composer who used a falling Shepard tone in a piece - something about the nightmares of the bombardier on the Enola Gay - but it still seems to me to be of [i]very[/i] limited practical value :')

Well, I'm a bit wacked out on medication now. It seems the challenge for making it useful would be to make this polyphonic - whatever that would mean in this context. At least something you can play - from a keyboard fr'instance.

Nice work. Like Howard, I have tried this in the past (with csound/softsynths etc) but without the same degree of success. I think YMO used it (to nice effect) on an album in the early 80's.

On the subject, while too trivial for it's own topic, here is a barberpole flanger. It uses nothing more than the FreqShifter with delayed feedback. I have to admit that I tend to overuse the FreqShifter, I just love the 60's analogue sound it gives to everything.

Thanks beloved MasterPatch!
I have the impression to hear the cycle of the pitch going up and then starting back down again Is it me

jamos wrote:

the bombardier on the Enola Gay

I once played in a band called "Pianola Gay" but we did not use Shepard Tones _________________homepage - blog - forum - youtube

Quote:

The man that hath no music in himself, nor is not mov'd with concord of sweet sounds, is fit for treasons, stratagems and spoils; the motions of his spirit are dull as night and his affections dark as Erebus: Let no such man be trusted. - W. Shakespeare

Last edited by seraph on Thu Jun 11, 2009 2:17 am; edited 1 time in total

It's nice to have a little chat every once in awhile with a smart ass like you

Who's the smart ass?

I do not know why this quote ended up on the wrong thread but I was talking to Elektro80, my Viking friend _________________homepage - blog - forum - youtube

Quote:

The man that hath no music in himself, nor is not mov'd with concord of sweet sounds, is fit for treasons, stratagems and spoils; the motions of his spirit are dull as night and his affections dark as Erebus: Let no such man be trusted. - W. Shakespeare

Here is a Shepard Tone generated on a Kyma system. There are a bunch of adjustments I could fiddle with to make it a closer match to Jamos' patch, but it's interesting as it is for comparison purposes.

I think you're right, Jamos, about the aliasing. The MP3 encoding is having a detrimental effect on these examples.

The man that hath no music in himself, nor is not mov'd with concord of sweet sounds, is fit for treasons, stratagems and spoils; the motions of his spirit are dull as night and his affections dark as Erebus: Let no such man be trusted. - W. Shakespeare

Are you talking about The Church of Jesus Christ of Latter-day Saints (LDS) _________________homepage - blog - forum - youtube

Quote:

The man that hath no music in himself, nor is not mov'd with concord of sweet sounds, is fit for treasons, stratagems and spoils; the motions of his spirit are dull as night and his affections dark as Erebus: Let no such man be trusted. - W. Shakespeare

The Barberpole Flanger is great. I've never heard this one. It's quite like the Shepard Tone - it just keeps going up and up. It's such a simple patch. Here's a screen scrape and an mp3 file.

Unfortunately, my G2 is in the studio two floors below this computer. Could you post the actual patch? That would make it a lot easier to transport to the G2.

BTW, a guy I knew at Ohio State University made an EM piece from a Shepard Tone patch he did on a Moog modular. He generated the pitch control voltage with a battery, resistor and charging capacior. He started the patch and the tape recorder and went away for an hour. (Long time constant!)

Thought I had better update the flange patch, as V1.2 no longer has mix out. The new version simply uses a 2-1 switch for manual direction control. If you require 'voltage controlled' direction then use a x-fade instead. I also put a more musically relevant example in variation 2 (for those not so much into noise).

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